Note: I have a section in the dependencies where I label the things I added by hand. These are things that Spring Initializr did not automatically add (and should have), so I needed to add them manually to get the project to run.

I believe the issue has to do with my IntelliJ Idea setup, since running a new project in STS (Spring Tool Suite) runs fine.

Some other things I've tried and still getting the same result:

Using the web version of Spring Initializr.

Creating a new Spring Boot project without any libraries

Downloading sample projects and running them.

Adding dependencies that have this library manually via Maven.

Creating then project in STS and importing it into IntelliJ Idea.

Basically anything within the first ten pages of Google Search results for the issue.